Not sure how relevant that is, except maybe that it contributed to her being quite thin. That’s generally a good thing for reducing all cause mortality, but when it comes to resilience against severe Covid or Flu, there is actually a J-shaped curve risk relative to BMI, and slightly overweight people actually have lower mortality rates.

In any event, this is an incredibly unlikely and tragic story. Hard to ascribe her death to anything more than horribly bad luck given her age and fitness level.